Across
- 4. Submarine mountains with flat tops
- 7. The type of hydrothermal vent that emits the hottest, darkest plumes
- 8. Type of margin with steep slopes and trenches
- 11. A pile of sediment at the base of the continental slope
- 14. Hydrothermal vent that emits cooler, lighter-colored plumes
- 16. What ancient civilization first recorded ocean depth measurements?
- 17. The deepest part of the Mariana Trench
- 18. Underwater mountains
- 19. Ships using sonar move in this pattern to map the ocean floor
- 20. Type of margin with wide shelves and no trenches
- 21. Underwater hot springs that emit mineral-rich water
- 22. The process responsible for the structure of the ocean floor
- 23. A type of hydrothermal vent with weak, shimmering flows
- 24. The shallowest part of the continental margin
- 25. The steep descent from the shelf break to the deep-sea floor
- 26. This is formed by tectonic plates pulling apart
Down
- 1. The submerged edges of continents
- 2. Deep valleys that cut into continental slopes
- 3. Submarine mountains that are partly exposed above the ocean surface
- 5. Device that sends sound waves to measure ocean depth
- 6. The study of underwater depth
- 9. Deepest parts of the ocean, found where one plate sinks below another
- 10. Type of sonar that uses a fanlike formation of sound waves
- 12. The world’s deepest trench, located in the Pacific Ocean
- 13. Flat region of the ocean floor
- 15. The description of an area's physical features